JPH0517842Y2 - - Google Patents
Info
- Publication number
- JPH0517842Y2 JPH0517842Y2 JP1986190152U JP19015286U JPH0517842Y2 JP H0517842 Y2 JPH0517842 Y2 JP H0517842Y2 JP 1986190152 U JP1986190152 U JP 1986190152U JP 19015286 U JP19015286 U JP 19015286U JP H0517842 Y2 JPH0517842 Y2 JP H0517842Y2
- Authority
- JP
- Japan
- Prior art keywords
- case
- resin
- board
- terminal board
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011347 resin Substances 0.000 claims description 32
- 229920005989 resin Polymers 0.000 claims description 32
- 230000035515 penetration Effects 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000000758 substrate Substances 0.000 description 7
- 238000005476 soldering Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010125 resin casting Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Details Of Resistors (AREA)
- Adjustable Resistors (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、ケース裏面部の封止用注型樹脂を利
用した、可変抵抗器の端子板固定構造に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a structure for fixing a terminal plate of a variable resistor using a molding resin for sealing the back surface of a case.
〈従来の技術〉
第６図は従来の可変抵抗器の端子板固定構造を
示す。この図において、ケース２０内には、その
背面側開口部から、図示しない円弧状の抵抗膜や
集電電極を備えたステータ基板２１が嵌着されて
いる。２２は前記基板２１の背面側に注型された
封止用の樹脂である。２３はＬ字状に折曲形成さ
れた接地用等の端子板で、基板２１から樹脂２２
層を貫通してケース２０の背面一側方に延びてい
る。端子板２３の樹脂２２層からの露出部２３ａ
は、ケース２０の背面側縁部２０ａに一体形成さ
れた樹脂突片２４の熱かしめにより、つまり樹脂
突片２４が半田ゴテ等の加熱体で押し潰されるこ
とにより固定されている。<Prior Art> FIG. 6 shows a conventional terminal plate fixing structure of a variable resistor. In this figure, a stator substrate 21 equipped with an arcuate resistance film and a current collecting electrode (not shown) is fitted into a case 20 from an opening on the back side thereof. A sealing resin 22 is cast on the back side of the substrate 21. Reference numeral 23 denotes a terminal plate for grounding, etc., which is bent into an L shape.
It penetrates through the layers and extends to one side of the back surface of the case 20. Exposed portion 23a of the terminal board 23 from the resin 22 layer
is fixed by thermal caulking of a resin protrusion 24 integrally formed on the rear side edge 20a of the case 20, that is, by crushing the resin protrusion 24 with a heating element such as a soldering iron.
なお、前記端子板２３を、第７図のように、基
板２１からの導出部２３ｂと別部材で構成し、導
出部２３ｂを端子板２３に巻き付けて接続したも
のも存在する。 Note that, as shown in FIG. 7, there is also a device in which the terminal plate 23 is formed of a separate member from the lead-out portion 23b from the substrate 21, and the lead-out portion 23b is wound around the terminal plate 23 and connected.
〈考案が解決しようとする問題点〉
前記構成では、端子板２３の注型樹脂２２層か
らの露出部２３ａを固定するとき、樹脂突片２４
を半田ゴテで押し潰すため、半田ゴテの温度管理
が必要であると共に、樹脂突片２４の押し潰し状
態には個人差があつて、端子板２３の固定強度が
バラつき、さらには、半田ゴテの操作ミスにより
ケース２０の樹脂突片２４以外の部分を溶かして
しまうおそれがあつた。<Problems to be solved by the invention> In the above configuration, when fixing the exposed portion 23a of the terminal board 23 from the 22 layers of cast resin, the resin protrusion 24
In order to crush the terminal board 23 with the soldering iron, it is necessary to control the temperature of the soldering iron, and there are individual differences in the crushing state of the resin protrusion 24, resulting in variations in the fixing strength of the terminal board 23, and furthermore, the temperature of the soldering iron There was a risk that a portion of the case 20 other than the resin protrusion 24 would be melted due to an operational error.
したがつて、本考案は、端子板の注型樹脂層か
らの露出部を、半田ゴテ等の加熱体による溶着作
業を行なうことなく固定できる可変抵抗器の端子
板固定構造を提供することを目的とする。 Therefore, an object of the present invention is to provide a terminal plate fixing structure for a variable resistor that can fix the exposed portion of the terminal plate from the cast resin layer without performing welding work using a heating element such as a soldering iron. shall be.
〈問題点を解決するための手段〉
上記目的を達成するため、本考案は、ケースの
背面側開口部にステータ基板が装入され、この基
板がケース内に充填される樹脂により封止されて
いる可変抵抗器の端子板固定構造において、前記
基板から導出される端子板に、ケースの背面側縁
部に位置決めされる位置決め部と、この位置決め
部からケース内の基板側へ屈曲されてケース内側
面と対向する対向部とが形成され、前記ケースの
背面側縁部の前記端子板に相対する面に、一端側
が前記ケースの内側面で開放する樹脂浸入用の溝
が形成され、前記端子板の対向部が前記ケースの
内側面に隙間を介して配置されるとともに、前記
位置決め部が前記ケースの背面側縁部の樹脂浸入
用の溝が形成された面上に載置され、前記ケース
内に充填され前記隙間とそれに連続する前記溝と
表面張力により浸入して硬化する樹脂により前記
端子板の対向部と位置決め部とが前記ケースに固
定されている構成とした。<Means for solving the problem> In order to achieve the above object, the present invention includes a stator board inserted into the opening on the back side of the case, and this board sealed with a resin filled in the case. In the terminal plate fixing structure of a variable resistor, the terminal plate led out from the board has a positioning part positioned on the back side edge of the case, and a positioning part that is bent from this positioning part toward the board inside the case and attached inside the case. A facing part is formed opposite to the side surface, and a groove for resin infiltration is formed on the surface of the back side edge of the case facing the terminal board, one end of which is open at the inner surface of the case, and the terminal board The opposing part is disposed on the inner surface of the case with a gap therebetween, and the positioning part is placed on the surface of the back side edge of the case in which a groove for resin infiltration is formed, and The opposing portion of the terminal board and the positioning portion are fixed to the case by a resin that is filled in the gap and the groove continuous thereto and hardens by penetrating the gap and the groove by surface tension.
〈作用〉
上記の構成によれば、ケース内に充填され端子
板の対向部とケースの内側面との隙間及びそれに
連続する背面側縁部に形成される樹脂浸入用の溝
に表面張力により浸入して硬化する樹脂により、
端子板の対向部と位置決め部とがケースに固定さ
れる。<Function> According to the above configuration, the resin infiltrates into the groove filled in the case and formed in the gap between the facing part of the terminal board and the inner surface of the case and the rear side edge continuous thereto due to surface tension. The resin cures by
The facing portion and the positioning portion of the terminal board are fixed to the case.
〈実施例〉
以下、本考案を図面に示す実施例にもとづき説
明する。<Example> The present invention will be described below based on an example shown in the drawings.
第１図はこの実施例に係る可変抵抗器の一部破
断側面図、第２図は第１図のＡ−Ａ線断面図、ま
た第３図は第１部のＢ−Ｂ線矢視図である。 Fig. 1 is a partially cutaway side view of the variable resistor according to this embodiment, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a view taken along line B-B of the first part. It is.
これらの図において、ケース１の背面は開口部
２とされ、この開口部２からケース１内にロータ
３が配置される。このロータ３は、回動操作用の
軸４を有し、かつ下面３ａに図示しないブラシを
備える。また、ケース１の開口部には、ステータ
となる基板５が内装される。この基板５は、内面
に円弧状の抵抗膜および集電電極等を備え、ケー
ス１内の段部１ｂに支持されている。基板５の背
面側は、開口部２から注型された封止用の樹脂６
により覆われている。 In these figures, the back surface of the case 1 is an opening 2, and the rotor 3 is placed into the case 1 through the opening 2. This rotor 3 has a shaft 4 for rotational operation, and is equipped with a brush (not shown) on the lower surface 3a. Further, a substrate 5 serving as a stator is housed in the opening of the case 1. This substrate 5 has an arcuate resistance film, a current collecting electrode, etc. on its inner surface, and is supported by a stepped portion 1b inside the case 1. The back side of the substrate 5 is filled with a sealing resin 6 cast from the opening 2.
covered by.
端子板７はアース用で、その基部７ａは基板５
に固定され、アース用電極に接続されている。端
子板７の樹脂６層からの露出部７ｂには、ケース
１の背面側縁部１ｃに一体形成のピン８に嵌合し
て位置決めされる位置決め部７ｃと、この位置決
め部７ｃから基板５側へ屈曲されてケース内側面
１ａと隙間Ｇをおいて対向する対向部７ｄとが形
成されている。ケース１の背面側縁部１ｃには、
さらに、上記隙間Ｇから端子板７の下側に連続す
る溝１０が形成されている。なお、１１，１１は
条片で、端子板７の両側に位置してケース１の背
面側縁部１ｃに一体形成されている。 The terminal plate 7 is for grounding, and its base 7a is connected to the board 5.
and connected to the ground electrode. The exposed portion 7b of the terminal board 7 from the six resin layers has a positioning portion 7c that is positioned by fitting into a pin 8 integrally formed on the back side edge 1c of the case 1, and a positioning portion 7c that is positioned from the positioning portion 7c to the board 5 side. A facing portion 7d is formed by being bent to face the inner surface 1a of the case with a gap G therebetween. On the back side edge 1c of the case 1,
Furthermore, a groove 10 is formed that continues from the gap G to the lower side of the terminal plate 7. Incidentally, reference numerals 11 and 11 are strips, which are located on both sides of the terminal plate 7 and are integrally formed on the back side edge 1c of the case 1.
このような構成において、基板５の背面に樹脂
６を注型したとき、樹脂６の一部６ａは、端子板
７とケース内側面１ａとの隙間Ｇに浸入して表面
張力で上がり、さらに溝１０に沿つて端子板７の
下面７ｅに付着し硬化する。すなわち、樹脂６の
一部により、端子板７の樹脂６層からの露出部７
ｂがケース１に固定される。端子板７の下面７ｅ
に浸入した樹脂６ａは、条片１１，１１により左
右方向への漏出を防止される。 In such a configuration, when the resin 6 is cast on the back surface of the board 5, a portion 6a of the resin 6 enters the gap G between the terminal plate 7 and the case inner surface 1a, rises due to surface tension, and further forms the groove. 10, it adheres to the lower surface 7e of the terminal plate 7 and hardens. That is, the exposed portion 7 of the terminal board 7 from the resin 6 layer is partially covered by the resin 6.
b is fixed to case 1. Lower surface 7e of terminal plate 7
The resin 6a that has permeated is prevented from leaking in the left-right direction by the strips 11, 11.
なお、上記実施例では、第１図のように、端子
板７の基部７ａは、樹脂６層の中でＬ字状に折曲
した形となつており、したがつて、端子板７の固
定強度は大である。 In the above embodiment, as shown in FIG. 1, the base 7a of the terminal board 7 is bent into an L-shape within the six resin layers, so that the terminal board 7 cannot be fixed. The strength is great.
また、上記実施例では、ケース内側面１ａを平
滑面とした上で、端子板７の対向部７ｄをケース
内側面１ａから若干離間させることによつて、第
３に示すように、端子板７の全幅Ｓにわたつて隙
間Ｇを形成したが、第４図のように、端子板７の
対向部７ｄをケース内側面１ａに当てつける場合
には、そのケース内側面１ａに縦溝からなる隙間
Ｇを形成すればよい。 Further, in the above embodiment, the inner surface 1a of the case is made a smooth surface and the opposing portion 7d of the terminal plate 7 is slightly spaced apart from the inner surface 1a of the case. However, when the facing portion 7d of the terminal plate 7 is brought into contact with the inner surface 1a of the case as shown in FIG. It is sufficient to form G.
端子板７の位置決め部７ｄの形状は、上記実施
例の形状に限定されるものではなく、たとえば、
ケース１の背面側縁部１ｃに一体形成した一対の
突部が位置決め部７ｃの両側部に嵌合する形状と
してもよい。 The shape of the positioning portion 7d of the terminal plate 7 is not limited to the shape of the above embodiment, for example,
A pair of protrusions integrally formed on the back side edge 1c of the case 1 may be shaped to fit on both sides of the positioning portion 7c.
さらに、第５図のように、端子板７として、基
部５からの導出部７ｆと、樹脂６層からの露出部
７ｂとを個別部材で構成したものを使用すること
ができる。この点を除く他の構成は、基本的に先
の実施例と同様であり、したがつて、第１図のそ
れと同一部分もしくは相当部分には同一符号をつ
けて、その説明は省略する。 Furthermore, as shown in FIG. 5, it is possible to use a terminal board 7 in which the lead-out portion 7f from the base 5 and the exposed portion 7b from the six resin layers are made of separate members. The other configurations except for this point are basically the same as those of the previous embodiment, and therefore, the same or corresponding parts as those in FIG. 1 are given the same reference numerals, and the explanation thereof will be omitted.
〈考案の効果〉
本考案の可変抵抗器の端子板固定構造によれ
ば、ケース内に充填され端子板の対向部とケース
の内側面との隙間及びそれに連続する背面側縁部
に形成される樹脂浸入用の溝に表面張力により浸
入して硬化する樹脂により、端子板の対向部と位
置決め部とがケースに固定されるので、その固定
に特別な手作業や固定作業用器具を必要としな
い。すなわち、従来から行なわれている樹脂の注
型工程を利用して、上記露出部を固定するため、
従来の半田ゴテで行なわれたような温度管理が不
要になると共に、上記露出部の固定強度が均等化
され、また、ケースの外観が損なわれることがな
い。<Effect of the invention> According to the terminal board fixing structure of the variable resistor of the present invention, the terminal board is filled in the case and is formed in the gap between the facing part of the terminal board and the inner surface of the case and the rear side edge continuous thereto. The facing part and the positioning part of the terminal board are fixed to the case by the resin that infiltrates the groove for resin infiltration and hardens due to surface tension, so no special manual work or fixing equipment is required to fix them. . That is, in order to fix the exposed part using the conventional resin casting process,
Temperature control as required with conventional soldering irons is no longer necessary, the fixing strength of the exposed portions is equalized, and the appearance of the case is not impaired.
第１図は本考案の一実施例に係る可変抵抗器の
一部破断側面図、第２図は第１図のＡ−Ａ線断面
図、第３図は第１図のＢ−Ｂ線矢視図、第４図は
隙間の変形例を示す一部切欠平面図、第５図は本
考案の他の実施例に係る可変抵抗器の一部断面側
面図、第６図および第７図は従来例の一部破断側
面図である。
１……ケース、１ａ……ケース内側面、１ｃ…
…背面側縁部、５……基板、６……樹脂、７……
端子板、７ｃ……位置決め部、７ｄ……対向部、
Ｇ……隙間。
FIG. 1 is a partially cutaway side view of a variable resistor according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-B in FIG. 4 is a partially cutaway plan view showing a modified example of the gap, FIG. 5 is a partially sectional side view of a variable resistor according to another embodiment of the present invention, and FIGS. 6 and 7 are FIG. 2 is a partially cutaway side view of a conventional example. 1...Case, 1a...Inner surface of case, 1c...
...Back side edge, 5...Substrate, 6...Resin, 7...
Terminal board, 7c...Positioning part, 7d...Opposing part,
G...Gap.
Claims (1)
れ、この基板がケース内に充填される樹脂により
封止されている可変抵抗器の端子板固定構造にお
いて、 前記基板から導出される端子板に、ケースの背
面側縁部に位置決めされる位置決め部と、この位
置決め部からケース内の基板側へ屈曲されてケー
ス内側面と対向する対向部とが形成され、 前記ケースの背面側縁部の前記端子板に相対す
る面に、一端側が前記ケースの内側面で開放する
樹脂浸入用の溝が形成され、 前記端子板の対向部が前記ケースの内側面に隙
間を介して配置されるとともに、前記位置決め部
が前記ケースの背面側縁部の樹脂浸入用の溝が形
成された面上に載置され、 前記ケース内に充填され前記隙間とそれに連続
する前記溝とに表面張力により浸入して硬化する
樹脂により前記端子板の対向部と位置決め部とが
前記ケースに固定されていることを特徴とする可
変抵抗器の端子板固定構造。[Utility Model Claim] A terminal board fixing structure for a variable resistor in which a stator board is inserted into an opening on the rear side of a case and the board is sealed with resin filled inside the case, characterized in that the terminal board extending from the board has a positioning portion which is positioned on the rear edge of the case and a facing portion which is bent from the positioning portion towards the board inside the case and faces the inner side of the case, a groove for resin penetration is formed on a surface of the rear edge of the case facing the terminal board, the groove having one end opening at the inner side of the case, the facing portion of the terminal board is positioned on the inner side of the case with a gap interposed therebetween and the positioning portion is placed on the surface of the rear edge of the case where the groove for resin penetration is formed, and the facing portion and positioning portion of the terminal board are fixed to the case by resin which is filled inside the case and which penetrates into the gap and the groove continuing therefrom due to surface tension and hardens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986190152U JPH0517842Y2 (en) | 1986-12-10 | 1986-12-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986190152U JPH0517842Y2 (en) | 1986-12-10 | 1986-12-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6395205U JPS6395205U (en) | 1988-06-20 |
| JPH0517842Y2 true JPH0517842Y2 (en) | 1993-05-13 |
Family
ID=31143108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986190152U Expired - Lifetime JPH0517842Y2 (en) | 1986-12-10 | 1986-12-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0517842Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2519707Y2 (en) * | 1992-10-05 | 1996-12-11 | 株式会社村田製作所 | Variable resistor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61166503U (en) * | 1985-04-02 | 1986-10-16 |
-
1986
- 1986-12-10 JP JP1986190152U patent/JPH0517842Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6395205U (en) | 1988-06-20 |
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